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nitro tstr lder-ent @time ROBERT CREUZBAUR, OF NEW YORK, N. Y. Letters .Patent No. 70,172, detect October 29, 1867.

I IMPROVEMENT IN GONNEGTING-LINK.

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Be it known that I, ROBERT CREUZBAUR, of the city and county ot New York, in the State of New York, have invented a new and improved connecting-link, which I denominate the 0 Connecting-Link and I do hereby declare that the following isa full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in whichi Figure 1 is a side view of that Vside of the link upon which the springlatch is applied.l

Figure 2 is a view ot' the opposite side ofthe link.

Figure 3 shows the link open.

Figure 4 is an edge View of the link closed.

Similar lettersot' reference indicate corresponding parts in the several figures.

The object of this invention is to produce a connecting-link which shall possess the advantages of great` strength, lightness, good proportions for use and appearance, and a locking arrangement which shall be easily and conveniently1 manipulated, and yet perfectly safe, as will be hereinafter described.

To enable others skilled in the art to understand my invention, I will describe its construction and operation.

This improved link is composed of four parts connected together by rivets. Ais the main part of the link7 which is of a C shape, as shown in fig. 3, which is shouldered and squared at the ends as shown, and which 'is made of wrought mctal,.bent and swaged inproper shape. The tongue orpart B covers the opening of' the link proper, and is rmly pivoted at one end to one end of the same; the other end of this part B is formed with a tongue upon it, which tits into a corresponding groove in the part A. When the part B is closed its tongue or tenon fitting into the groove, as shown in fig. 4, prevents the straightening out of the link A when under strain. To give the part B a strength corresponding somewhat to the main portion of the link, it is made of steel swaged in proper shape. To assist thepivot a in sustaining the strain, a somewhat slighter shoulder or tongue maybe of its two shoulders S S, to keep lthe link A and piece B from separating when under a heavy strain. In order to prevent the turning ofthe piece D around the rivet which secures it to the piece B, the latter is tongued and the former grooved to match each other, as indicated in dotted lines, fig. 4. The spring E, which is fastened to B with the same rivet which fastens D to B, lies in a groove which is swaged into 'the piece B, and, in closing the link, this spring falls into a groove which is swaged into the link A, and thus forms a lock or latch. To open the link thc free end of the spring E 'is raised out ot' the notch in A, so that `the piece B, with its piece D, can be turned outward, as indicated in fig. 3.

It will be seen from the above description that the closing portion ofthe link serves a very important pur-` pose in strengthening the link, by preventing the portion A from straightening out or becoming strained.

Having described my invention, what I claim as new, and desire Ato secure by Letters Patent, isl l. An O connecting-link having a closing piece pivoted to it substantially as described. 2. Adapting the pivoted closing piece of the O link to serve as a means of strengthening the main portion of the link, substantially as described. l Y

3. The combination ofthe pivoted closing piece B, spring E, land link-portion A, constructed substantially as described.

ROBERT CREUZBAUR.

Witnesses:

JOHN P. KIRK, HENRY BInenorr. 

